报告地点：维格堂319

报告时间：2020年1月14日， 10:00-11:00

摘要：Mean dimension is an invariant of dynamical systems which can distinguish systems of infinite entropy. 
We  introduce the  notion  of  conditional  mean  dimension for a topological dynamical system relative to a factor system. 
With the help of this notion, an inequality is obtained to estimate the mean dimension of the extension system.
This inequality can be treated as a generalization of the formula for Cartesian products of systems.
 Conditional mean dimension for a $G$-extension is computed.